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公开(公告)号：US20210281201A1
公开(公告)日：2021-09-09
申请号：US17189451
申请日：2021-03-02
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takuya NARUSE , Kazuki NAJIMA
Abstract: The motor-driven compressor includes an electric motor, a housing, a compression portion, and an inverter device. The inverter device includes an inverter circuit, a current sensor, a coordinate converter, a speed controller, a current controller, a PWM controller, and a rotation angle estimator. The speed controller generates a d-axis current command value and a q-axis current command value such that a necessary torque to drive the electric motor occurs. The inverter device includes a heat-generating current command section that increases a temperature of the electric motor by changing the d-axis current command value and the q-axis current command value. The heat-generating current command section changes the d-axis current command value and the q-axis current command value so as to shift them in a direction in which a d-axis current value increases along a constant torque curve in a d-q coordinate system.
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公开(公告)号：US20160134226A1
公开(公告)日：2016-05-12
申请号：US14930724
申请日：2015-11-03
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Kazuki NAJIMA
IPC: H02P29/00
CPC classification number: H02P29/68 , G06F1/206 , H02H6/00 , H02H7/08 , H02P29/032
Abstract: A control device for an on-vehicle electric compressor controls and drives an electric motor arranged in the on-vehicle electric compressor. The control device includes a temperature acquisition unit, a current detector, a threshold current value setting unit, and a motor current controller. The temperature acquisition unit acquires a temperature of the control device. The current detector detects a motor current, which is current that flows through the electric motor. The threshold current value setting unit sets a threshold current value in accordance with the temperature of the control device acquired by the temperature acquisition unit. The motor current controller controls the motor current based on a detection result of the current detector so that the motor current becomes less than or equal to the threshold current value.
Abstract translation: 用于车载电动压缩机的控制装置控制并驱动布置在车载电动压缩机中的电动机。 控制装置包括温度获取单元，电流检测器，阈值电流值设定单元和电动机电流控制器。 温度获取单元获取控制装置的温度。 电流检测器检测电动机电流，其是流过电动机的电流。 阈值电流值设定单元根据由温度获取单元获取的控制装置的温度来设定阈值电流值。 电动机电流控制器基于电流检测器的检测结果控制电动机电流，使得电动机电流变得小于或等于阈值电流值。
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公开(公告)号：US20180287543A1
公开(公告)日：2018-10-04
申请号：US15935188
申请日：2018-03-26
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takashi KAWASHIMA , Yoshiki NAGATA , Satoshi OKADA , Fumihiro KAGAWA , Kazuki NAJIMA , Hiroshi FUKASAKU
CPC classification number: H02P27/06 , B60H1/3211 , B60H1/3222 , B60H2001/3292 , F04D25/068 , F04D27/001 , H02M7/003 , H02M7/5387 , H02M2001/322
Abstract: A motor-driven compressor for a vehicle includes a housing, a compression unit, a motor, and an inverter device. The inverter device includes an inverter circuit, a capacitor, a current sensor, a determination means configured to control switching elements in response to the current sensor not detecting a flow of current when the motor stops operating and configured to determine whether or not the current sensor detects a flow of current when controlling the switching elements, and a discharge starting means configured to start discharging the capacitor when the determination means determines that the flow of current has not been detected.
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公开(公告)号：US20170284409A1
公开(公告)日：2017-10-05
申请号：US15468307
申请日：2017-03-24
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takashi KAWASHIMA , Yoshiki NAGATA , Kazuki NAJIMA
CPC classification number: F04D27/004 , B60H1/3205 , B60H1/3222 , B60H2001/3272 , B60H2001/3292 , F04B27/08 , F04B35/04 , F04B49/02 , F04B49/06 , F04B49/20 , F04C23/008 , F04C28/08 , F04C29/0085 , F04C2240/40 , F04C2240/403 , F04C2270/051 , F04C2270/0525 , F04C2270/605 , F04D25/0673
Abstract: The control section controls the electric motor to be driven such that the number of revolutions becomes equal to the target number of revolutions. If the control section sets the target number of revolutions to a number of revolutions of the electric motor requested by another control section, the control section changes the number of revolutions of the electric motor at an increase rate lower than or equal to the upper limit value of the increase rate or at a decrease rate lower than or equal to the upper limit value of the decrease rate. If the control section sets the target number of revolutions to a number-of-revolutions limit value, which is determined based on the voltage of a vehicle battery, the control section is able to decrease the number of revolutions of the electric motor at a decrease rate exceeding the upper limit value.
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公开(公告)号：US20160285396A1
公开(公告)日：2016-09-29
申请号：US15069079
申请日：2016-03-14
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Kazuki NAJIMA
CPC classification number: B60H1/3226 , B60H1/3222 , H02P6/185
Abstract: The controller controls an inverter that drives an in-vehicle three-phase motor. The controller includes a voltage application unit, a current obtaining unit, an addition unit, an addition conversion unit, and a derivation unit. The current obtaining unit obtains a positive current and a negative current flowing to each of the three phases. The addition unit adds the positive current and the negative current flowing to each phase. The addition conversion unit performs a three-phase to two-phase conversion on the three addition values. The derivation unit derives a magnetic pole position of the rotor, when the rotor is stopped, based on the conversion result of the addition conversion unit.
Abstract translation: 控制器控制驱动车载三相电机的变频器。 控制器包括电压施加单元，电流获取单元，加法单元，加法转换单元和导出单元。 电流获取单元获得流向三相中的每一个的正电流和负电流。 加法单元将流过每相的正电流和负电流相加。 加法转换单元对三个相加值执行三相到两相转换。 基于加法转换单元的转换结果，推导单元导出转子的磁极位置，当转子停止时。
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Patent Agency Ranking
公开(公告)号：US20210162871A1
公开(公告)日：2021-06-03
申请号：US17101098
申请日：2020-11-23
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takashi KAWASHIMA , Kazuki NAJIMA , Tomohiro TAKAMI , Yoshiki NAGATA
Abstract: An inverter controller includes a processing circuitry. The processing circuitry is configured to obtain a command rotation speed transmitted repeatedly from outside of the inverter controller, count a command obtaining interval that is a period from a point in time where an old command rotation speed was obtained to a point in time where a new command rotation speed is obtained, set a target acceleration of the electric motor when the command rotation speed has been obtained, and control the inverter circuit such that the electric motor rotates at the set target acceleration. The processing circuitry is configured to calculate a command acceleration based on the counted command obtaining interval and the new command rotation speed, the command acceleration being set as the target acceleration.
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公开(公告)号：US20180102723A1
公开(公告)日：2018-04-12
申请号：US15724530
申请日：2017-10-04
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Takashi KAWASHIMA , Tomohiro TAKAMI , Kazuki NAJIMA , Yoshiki NAGATA
IPC: H02P27/08 , H02P21/22 , B60L11/18 , H02M7/5395 , H02M1/08
CPC classification number: H02P27/08 , B60L50/51 , B60L2210/40 , B60L2220/14 , B60L2220/16 , H02M1/08 , H02M7/5395 , H02M2001/0054 , H02P21/18 , H02P21/22 , H02P27/085 , Y02T10/643 , Y02T10/7005 , Y02T10/7241 , Y02T10/92
Abstract: An in-vehicle inverter driving device is used to perform PWM control of an inverter circuit that drives an electric motor. The electric motor includes a rotor having a permanent magnet and a stator about which three-phase coils are wound. The in-vehicle inverter driving device includes a bootstrap circuit, which uses a capacitor to turn ON upper arm switching elements of the inverter circuit. The in-vehicle inverter driving circuit includes a PWM control section that controls the inverter circuit by a lower-arm-fixing two-phase modulation method. The PWM control section performs shift correction and dead-time correction in the lower-arm-fixing two-phase modulation method.
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公开(公告)号：US20140090412A1
公开(公告)日：2014-04-03
申请号：US14035239
申请日：2013-09-24
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Hiroshi FUKASAKU , Kazuki NAJIMA , Satoru EGAWA
IPC: F04C28/24
CPC classification number: F04C28/24 , F04C18/0215 , F04C23/008 , F04C29/0035 , F04C29/026 , F04C29/124 , F04C2240/403
Abstract: A motor-driven compressor includes a housing assembly, a compression mechanism, an electric motor, a discharge port, an outlet, a discharge passage, discharge valve and a valve device. The compression mechanism is accommodated in the housing assembly. The electric motor drives the compression mechanism. The discharge chamber is formed in the housing assembly. The discharge port is formed in the housing assembly for communication between the discharge chamber and the compression mechanism. The outlet is formed in the housing assembly for communication with an external circuit. The discharge passage is formed in the housing assembly for communication between the discharge chamber and the outlet. The discharge valve is disposed in the discharge chamber for opening and closing the discharge port. The valve device is configured to adjust an opening of the discharge passage.
Abstract translation: 电动压缩机包括壳体组件，压缩机构，电动机，排出口，出口，排出通道，排出阀和阀装置。 压缩机构容纳在壳体组件中。 电动机驱动压缩机构。 排出室形成在壳体组件中。 排出口形成在壳体组件中，用于在排出室和压缩机构之间连通。 出口形成在壳体组件中以与外部电路通信。 排出通道形成在壳体组件中，用于在排出室和出口之间连通。 排出阀设置在排出室中，用于打开和关闭排出口。 阀装置构造成调节排出通道的开口。
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公开(公告)号：US20140076434A1
公开(公告)日：2014-03-20
申请号：US14024920
申请日：2013-09-12
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Hiroshi FUKASAKU , Kazuki NAJIMA
IPC: F17D1/04
CPC classification number: F17D1/04 , F04B39/121 , F04C23/008 , F04C2240/30 , F04C2240/808 , H02K5/22 , H02K11/044 , Y10T137/85978
Abstract: A first accommodation chamber accommodating therein an inverter unit with a built-in inverter circuit and a second accommodation chamber accommodating therein a filter unit with a built-in filter circuit are formed individually in different positions of a housing of a motor-driven compressor for a vehicle. The input terminals and the output terminals of the inverter unit and of the filter unit are all arranged so as to extend in the same direction.
Abstract translation: 容纳有内置逆变器电路的逆变器单元和容纳有内置过滤器回路的过滤单元的第二容纳室的第一容纳室分别形成在电动压缩机的壳体的不同位置 车辆。 逆变器单元和过滤器单元的输入端子和输出端子都以相同方向延伸。
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公开(公告)号：US20140063673A1
公开(公告)日：2014-03-06
申请号：US13975571
申请日：2013-08-26
Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Inventor： Fumihiro KAGAWA , Hiroshi FUKASAKU , Kazuki NAJIMA , Yoshiki NAGATA
IPC: H02H1/00
CPC classification number: H02H1/0061 , B60W10/30 , H02H9/007 , H04B15/005
Abstract: A protective device protects an LC filter in a vehicle. The vehicle includes a first vehicle-mounted electric device and a second vehicle-mounted electric device. The first vehicle-mounted electric device includes a first power converter. The second vehicle-mounted electric device includes a second power converter and shares a power supply with the first vehicle-mounted electric device. The LC filter is arranged between the first power converter and the power supply. The LC filter is configured such that the resonance frequency band of the LC filter can be changed. The resonance frequency band of the LC filter is changed based on a ripple amount in a current flowing in the LC filter.
Abstract translation: 保护装置保护车辆中的LC滤波器。 车辆包括第一车载电气装置和第二车载电气装置。 第一车载电气装置包括第一电力转换器。 第二车载电气装置包括第二电力转换器，并与第一车载电气装置共享电源。 LC滤波器设置在第一功率转换器和电源之间。 LC滤波器被配置成可以改变LC滤波器的谐振频带。 LC滤波器的谐振频带基于流过LC滤波器的电流中的纹波量而改变。
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